6d913fc343
* fix(binding): Expose validator engine used by the default Validator
- Add func ValidatorEngine for returning the underlying validator engine used
in the default StructValidator implementation.
- Remove the function RegisterValidation from the StructValidator interface
which made it immpossible to use a StructValidator implementation without the
validator.v8 library.
- Update and rename test for registering validation
Test{RegisterValidation => ValidatorEngine}.
- Update readme and example for registering custom validation.
- Add example for registering struct level validation.
- Add documentation for the following binding funcs/types:
- Binding interface
- StructValidator interface
- Validator instance
- Binding implementations
- Default func
* fix(binding): Move validator engine getter inside interface
* docs: rm date cmd from custom validation demo
55 lines
1.3 KiB
Go
55 lines
1.3 KiB
Go
// Copyright 2017 Manu Martinez-Almeida. All rights reserved.
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// Use of this source code is governed by a MIT style
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// license that can be found in the LICENSE file.
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package binding
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import (
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"reflect"
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"sync"
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"gopkg.in/go-playground/validator.v8"
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)
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type defaultValidator struct {
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once sync.Once
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validate *validator.Validate
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}
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var _ StructValidator = &defaultValidator{}
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func (v *defaultValidator) ValidateStruct(obj interface{}) error {
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if kindOfData(obj) == reflect.Struct {
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v.lazyinit()
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if err := v.validate.Struct(obj); err != nil {
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return error(err)
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}
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}
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return nil
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}
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// Engine returns the underlying validator engine which powers the default
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// Validator instance. This is useful if you want to register custom validations
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// or struct level validations. See validator GoDoc for more info -
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// https://godoc.org/gopkg.in/go-playground/validator.v8
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func (v *defaultValidator) Engine() interface{} {
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v.lazyinit()
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return v.validate
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}
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func (v *defaultValidator) lazyinit() {
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v.once.Do(func() {
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config := &validator.Config{TagName: "binding"}
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v.validate = validator.New(config)
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})
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}
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func kindOfData(data interface{}) reflect.Kind {
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value := reflect.ValueOf(data)
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valueType := value.Kind()
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if valueType == reflect.Ptr {
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valueType = value.Elem().Kind()
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}
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return valueType
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}
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